The number 5.12 is a special number,_________ that will be remembered by the Chinese forever.
| A．what | B．it | C．which | D．one |
-What did you think of ______ president?-I didn’t care for him at first，but after ____ time I get to like him.
| A．the; a | B．/; the | C．the; the | D．/; a |
Last term our maths teacher set so difficult an examination problem _____ none of us worked out.
| A．that | B．as | C．so that | D．which |
How pleased the detective was _____ what his customer told him!
| A．hearing | B．heard | C．to hearing | D．to hear |
Mrs. Brown was much disappointed to see the washing machine she had _____ went wrong again.
| A．it repaired | B．to be repaired | C．to repair | D．repaired |
-Has Tommy finished his homework yet?
-I have no idea; he ____ it this morning.
| A．was doing | B．had been doing | C．has done | D．did |